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电池电压为0V，不能再充电，后来换成万能充，又能充电了，请问下：为什么用万能充就能够激活电池。
请检查一下电池是发生哪种保护，是欠压保护还是过流短路保护？另外，可以尝试将电池拆下后连接一个小的负载，然后放回去看是否能够正常充放电。
